Which equation represents a circle with the same center as the circle shown but with a radius of 2 units? (x – 4)2 (y – 5)2 = 2 (x – 4)2 (y – 5)2 = 4 (x – 5)2 (y – 4)2 = 2 (x – 5)2 (y – 4)2 = 4

When amy exercises in her fitness center for 1 hr she burns a total of 475 calories.if she burns 9 calories a minute jogging on the treadmill and then burns 6.5 calories a minute pedaling on the stationary bicycle how many minutes of the hour does she spend exercising on the bicycle?